Allow a single trybot to mirror multiple waterfall bots.

scripts/slave/recipes/findit/chromium/compile.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import json
 
 from recipe_engine.config import List
 from recipe_engine.config import Single
 from recipe_engine.recipe_api import Property
 
@@ skipping 31 matching lines @@
 
 class CompileResult(object):
   SKIPPED = 'skipped'  # No compile is needed.
   PASSED = 'passed'  # Compile passed.
   FAILED = 'failed'  # Compile failed.
 
 
 def _run_compile_at_revision(api, target_mastername, target_buildername,
                              revision, compile_targets, use_analyze):
   with api.step.nest('test %s' % str(revision)):
+    bot_desc = api.chromium_tests.create_bot_desc(
+        target_mastername, target_buildername)
     # Checkout code at the given revision to recompile.
     bot_update_step, bot_db = \
         api.chromium_tests.prepare_checkout(
-            target_mastername,
-            target_buildername,
+            bot_desc,
             root_solution_revision=revision)
 
     # TODO(http://crbug.com/560991): if compile targets are provided, check
     # whether they exist and then use analyze to compile the impacted ones by
     # the given revision.
     compile_targets = sorted(set(compile_targets or []))
     if not compile_targets:
       compile_targets, _ = api.chromium_tests.get_compile_targets_and_tests(
-          target_mastername,
-          target_buildername,
+          bot_desc,
           bot_db,
           override_bot_type='builder_tester')
 
       if use_analyze:
         changed_files = api.findit.files_changed_by_revision(revision)
 
         _, compile_targets = api.chromium_tests.analyze(
             changed_files,
             test_targets=[],
             additional_compile_targets=compile_targets,
@@ skipping 20 matching lines @@
       return CompileResult.PASSED
     except api.step.InfraFailure:
       raise
     except api.step.StepFailure:
       return CompileResult.FAILED
 
 
 def RunSteps(api, target_mastername, target_buildername,
              good_revision, bad_revision,
              requested_compile_targets, use_analyze):
+  bot_desc = api.chromium_tests.create_bot_desc(
+      target_mastername, target_buildername)
   api.chromium_tests.configure_build(
-      target_mastername, target_buildername, override_bot_type='builder_tester')
+      bot_desc, override_bot_type='builder_tester')
 
   # Sync to bad revision, and retrieve revisions in the regression range.
   api.chromium_tests.prepare_checkout(
-      target_mastername, target_buildername,
-      root_solution_revision=bad_revision)
+      bot_desc, root_solution_revision=bad_revision)
   revisions_to_check = api.findit.revisions_between(good_revision, bad_revision)
 
   results = []
   try:
     for current_revision in revisions_to_check:
       compile_result = _run_compile_at_revision(
           api, target_mastername, target_buildername,
           current_revision, requested_compile_targets, use_analyze)
 
       results.append([current_revision, compile_result])
@@ skipping 110 matching lines @@
                              })) +
       api.override_step_data(
           'test r1.analyze',
           api.json.output({
               'status': 'Found dependency',
               'compile_targets': ['a', 'a_run'],
               'test_targets': ['a', 'a_run'],
           })
       )
   )